This patch fix a problem XScale port
detect code in autoconfig_16550a treat
16550A port as XScale port, caused by
CH352 device use the 6th bit(UART_IER_UUE)
in IER as a enhance function make this bit
w/r.
for the below device:
"
01:08.0 Serial controller: Device 4348:3253 (rev 10) (prog-if 02 [16550])
Subsystem: Device 4348:3253
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 20
Region 0: I/O ports at e010 [size=8]
Region 1: I/O ports at e000 [size=8]
Kernel driver in use: serial
"
[Note: I haven't test this patch, because I can't
access the hardware now, but it should be right]
Signed-off-by: Wang YanQing <udknight@xxxxxxxxx>
---
drivers/tty/serial/8250/8250_pci.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index ebcc362..be45d39 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1557,6 +1557,7 @@ pci_wch_ch353_setup(struct serial_private *priv,
#define PCI_DEVICE_ID_WCH_CH353_4S 0x3453
#define PCI_DEVICE_ID_WCH_CH353_2S1PF 0x5046
#define PCI_DEVICE_ID_WCH_CH353_2S1P 0x7053
+#define PCI_DEVICE_ID_WCH_CH352_2S 0x3253
#define PCI_VENDOR_ID_AGESTAR 0x5372
#define PCI_DEVICE_ID_AGESTAR_9375 0x6872
#define PCI_VENDOR_ID_ASIX 0x9710
@@ -2180,6 +2181,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = pci_wch_ch353_setup,
},
+ /* WCH CH352 2S card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH352_2S,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
/*
* ASIX devices with FIFO bug
*/
@@ -4873,6 +4882,10 @@ static struct pci_device_id serial_pci_tbl[] = {
PCI_ANY_ID, PCI_ANY_ID,
0, 0, pbn_b0_bt_2_115200 },
+ { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH352_2S,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
/*
* Commtech, Inc. Fastcom adapters
*/
--
1.7.11.1.116.g8228a23
--
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